Stable Cycling of Sodium All-Solid-State Batteries with High-Capacity Cathode Presodiation

Journal Article · Sun Feb 16 00:00:00 EST 2025 · Advanced Energy Materials

DOI:https://doi.org/10.1002/aenm.202405678· OSTI ID:3025023

Tang, Wei ^[1]; Bian, Wenjuan ^[2]; Xu, Dapeng ^[1]; Lee, Dong Ju ^[1]; Fuqua, Alexander ^[3]; Li, Feng ^[1]; Jeon, Yuju ^[1]; Chen, Zheng ^[1]

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1. University of California, San Diego
2. Idaho National Laboratory
3. University of California, San D

Sodium all-solid-state batteries (NaSSBs) with an alloy-type anode (e.g., Sn and Sb) offer superior capacity and energy density compared to hard carbon anode. However, the irreversible loss of Na+ at the alloy anode during the initial cycle results in diminished capacity and stability, impairing full-cell performance. This study presents an easy-to-implement cathode presodiation strategy by employing a Na-rich material to address these challenges. Leveraging the high theoretical capacity and suitable voltage window, Na2S is chosen as the Na donor, which is activated by creating a mixed electron-ion conducting network, delivering a high capacity of 511.7 mAh g-1. By adding a small amount (i.e., 3 wt.%) of Na2S to the cathode composite, a NaCrO2 || Sn full cell demonstrated capacity improvement from 90.8 to 118.2 mAh g-1 (based on cathode mass). The capacity-balanced full cell can thus cycle to more than 300 times with >90% capacity retention. This work provides a practical solution to enhance the full-cell performance and advance the transformation from half-cell to full-cell applications of NaSSBs.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Nuclear Energy (NE)
• Grant/Contract Number: AC07-05ID14517
• OSTI ID: 3025023
• Report Number(s): INL/JOU-25-82920-Rev000
• Journal Information: Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: N/A Vol. 15
• Country of Publication: United States
• Language: English

Related Subjects

25 - ENERGY STORAGE
Energy density
Mixed electron-ion network
Presodiation strategy
Sodium all-solid-state batteries
Sodium sulfide
Sustainable energy storage